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[Sentence Correction]
试题详情
题目：
The federal rules aimed at protecting human subjects of medical experiments were established to ensure that patients must be warned of potential risks and an independent panel would evaluate the experiment before it was conducted.
选项:
A、 must be warned of potential risks and an independent panel would
B、 must be warned of potential risks and that an independent panel
C、 are warned about potential risks and that an independent panel
D、 will be warned about potential risks and an independent panel would
E、 would be warned of potential risks and that an independent panel would
答案:
E
提问：
SC 没有录音
解答：
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提问：
选的B，觉得E前面用的ensure后面would是表可能性有点冲突，是不是B的panel后面加个must就对了？
解答：
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提问：
SC 没有录音
解答：
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